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Amethyst
Amethyst

Hematite
Hematite



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Amethyst
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Hematite

Amethyst and Hematite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
None
O = brownish red; E = yellowish red
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to translucent
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.544-1.5532.690-3.220
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Trigonal
1.8 Birefringence
0.0090.280
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli

Amethyst and Hematite Optic Character

Amethyst and Hematite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Amethyst and Hematite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Amethyst and Hematite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Amethyst and Hematite Transparency

Similar to their colors, Amethyst and Hematite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.